Value of type bool can be true or false.
bool
true
false
Zero value of bool is false.
https://codeeval.dev/gist/09bea09b2d80e5317ca402e4f4982ec5
Size of bool variable (e.g. when part of a struct) is 1 byte.
https://codeeval.dev/gist/ed82d04270fd27094ef4a7a9dfda5b51